Compress a MOV file (and convert it to MP4)
MOV is Apple's QuickTime container, used by iPhones, macOS screen recordings and many cameras. The files are often huge and don't always play on Windows or Android. Compressing here re-encodes the video to H.264/AAC in an MP4 container, so you get a smaller file and better compatibility at the same time.
Last updated September 2026
Compress a MOV to MP4 →How to do it
- Open the compressor.
- Load your MOV file.
- Pick a target size — Email (25 MB) is a good default for sharing.
- Lower the resolution to 1080p or 720p if the MOV is 4K.
- Compress and download — the result is an .mp4 file.
Tips
- ProRes MOVs from cameras are very large; memory limits may apply, so trim first if you can.
- The output keeps your aspect ratio, including vertical video.
- If a MOV won't load, it may use a codec the browser build can't decode — try exporting it as H.264 first.
FAQ
Does it convert MOV to MP4?
Yes. Video output is always H.264/AAC in an MP4 container, regardless of input format.
Can I compress iPhone HEVC MOV files?
Usually yes. HEVC decoding runs in ffmpeg.wasm; it's slower than H.264, and very long 4K clips can hit memory limits on phones.
Is my MOV uploaded?
No. The file stays in your browser's memory and is processed locally.